Results 21 to 30 of about 283,799 (295)
Numerical study on optical properties of non-circular metamaterial optical fiber
Results in Physics, 2018 A non-circular core fiber with a metamaterial cladding using gold is proposed. The mode confinement properties of the disclosed fiber are investigated under various metallic (gold) and dielectric (Al2O3) thickness for different wavelengths and different ...
B. Vasudevan +5 more
doaj +1 more source
Optimization of optical properties of Ge20Sb5Se75-based photonic crystal fibers
Tạp chí Khoa học, 2022 In this paper, we present a new design of solid-core photonic crystal fiber (PCF), a Ge20Sb5Se75 substrate with a hexagonal lattice structure. The fiber characteristics are studied in the long-wavelength range (from 1.5 µm to 7.0 µm).
VO Thi Minh Ngoc +7 more
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Engineering transverse Bragg resonance waveguides for large modal volume lasers [PDF]
, 2003 We recently analyzed a new class of laser amplifier based on transverse Bragg reflection. We show that the unique properties of Bragg confinement make it possible through modal loss discrimination to achieve single-transverse-mode operation with ...
Choi, John M. +3 more
core +1 more source
IEEE Photonics Journal, 2013 We propose the design of a low-loss suspended core terahertz fiber with rectangular-shaped dielectric strips in the fiber cross section. The finite element method is used to analyze the characteristics of the suspended core terahertz fiber.
Yuan-Feng Zhu +5 more
doaj +1 more source
IEEE Photonics Journal, 2022 We propose a weakly-coupled ultra-flattened chromatic dispersion few-mode photonic crystal fiber (FM-PCF) supporting 10 vector modes (HE11a, HE11b, TM01, HE21a, HE21b, TE01, HE31a, HE31b, EH11a, EH11b) which works over a large range of wavelength across ...
Xiao Lei +5 more
doaj +1 more source
Sensors, 2020 A novel, rectangle-based, porous-core photonic crystal fiber (PCF) has been modeled for the efficient propagation of a THz wave. The performance of the anticipated model has been assessed using the finite element method (FEM) in the range of 0.5–1.5 THz.
Abdullah Al-Mamun Bulbul +3 more
doaj +1 more source
Design of 2 μm Low-Loss Hollow-Core Anti-Resonant Fibers
Micromachines, 2023 We systematically studied several of the most traditional hollow-core anti-resonant fiber (HC-ARF) structures, with the aim of achieving low confinement loss, single-mode performance, and high insensitivity to bending in the 2 µm band.
Tianran Sun +10 more
doaj +1 more source
Energy-loss mechanisms and the annihilation of confined monopoles [PDF]
Nuclear Physics B, 1982 Abstract The annihilation process for a superheavy monopole-antimonopole pair connected by a relatively light magnetic flux tube (which is possibly relevant to the cosmological monopole problem) is studied. Three energy-loss mechanisms are considered in some detail.
F.Alexander Bais, Paul Langacker
openaire +1 more source
Fabrication and coupling to planar high-Q silica disk microcavities [PDF]
, 2003 Using standard lithographic techniques, we demonstrate fabrication of silica disk microcavities, which exhibit whispering-gallery-type modes having quality factors (Q) in excess of 1 million.
Armani, D. K. +3 more
core +1 more source
Quantum Noise and Polarization Fluctuations in Vertical Cavity Surface Emitting Lasers [PDF]
, 1997 We investigate the polarization fluctuations caused by quantum noise in quantum well vertical cavity surface emitting lasers (VCSELs). Langevin equations are derived on the basis of a generalized rate equation model in which the influence of competing ...
A. K. J. van Doorn +17 more
core +2 more sources